No urgency: As long as he is not complaining and he is playful bring it up for discussion at your next doctors visit.
Answered 7/17/2013
5.2k views
Likely a lymph node: There are thousands of lymph node located around the body that help screen out germs in the body serum before it returns to the circulation. There are many in the neck, head and behind the ear. At rest these are often 1/4 inch in diameter and may grow to marble sized when reacting to a stimulus. Bug bites, or viral infections can increase their size.
Answered 12/9/2013
5k views
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